Ring traveler and ring



Dec. 3, 1940. J WOOD, EI-AL 2,223,774

RING TRAVELER'AND RING Filed June 13, 1940 J 3nventor5:

Philip 0. vl e rbiwarib Jb/zn M Tl o ad (Ittomegs- Patented Dec. 3, 1940UNITED STATES PATENT OFFICE John M. Wood, East Providence, and Philip C.Wentworth, Providence, E. I., assignors to said Wentwcrth ApplicationJune 13, 1940, Serial No. 340,314

3 Claims.

In the spinning and twisting of Worsted and woolen yarns, or rayon,Nylon, celanese, Vignon and like synthetic yarns, on a vertical ringwith a twister type of traveler, many difficulties occur because of thevarying frictional drag of the traveler on the ring.

Although the operating conditions of the spinning or twisting frame arethe same for all bobbins in respect to such matters as spindle speed, 10weight of travelers, size of rings, and supposedly uniform lubrication,this varying frictional drag results in the bobbins not being uniformlyfilled with yarn at the time of doff, the bobbins when doffed actuallybeing of many varying di- 15 ameters. This is particularly true whereworsted or woolen yarns are being spun. Consequently where one bobbin isat full diameter and others are of varying diameters at the time ofdoff, the yarn spun on the bobbins of smaller diameters is not of thesame number, quality and loft as that of the full bobbin. This lack ofuniformity of the yarn seriously interferes with the after processes towhich the yarn is subjected, and detracts from the quality of goodswoven, knitted 25 or otherwise fabricated from such yarns.

inasmuch as the yarns referred to act in an abrasive manner, it isnecessary to use steel travelers for spinning and twisting such yarns,because the steel traveler affords greater stag bilit in dealing withthe abrasive action of said yarns.

In the manufacture of steel travelers of the vertical twister type it isgeneral practice to so shape them. that they are applied to the ringunder pressure and under considerable distortion in order that they willnot come ofl the ring when responding to the many different strains putupon them in the processes of spinning and twisting. This being so, thesteel strucp) ture of the traveler can be only as hard as a springtemper, while the ring is glass hard.

The powder-like abrasive which escapes from the yarn during the run ofthe traveler, however, has a great tendency to mix with the lubricant,and as the traveler is the smaller body and its steel structure is onlyas hard as a temper condition, it necessarily yields to the abrasiveelement with the accompanying grinding process, spending itself muchmore rapidly than 50 would if the abrasive element were not present.Moreover, as the strongly abrasive yarn passes through the top horn ofthe traveler at very high speed, it cuts the traveler and causeschafling of the yarn at the expense of its smooth- 55 ness andappearance in general.

To overcome the aforesaid difiiculties we mill or cut a depression inthe top edge of the ring, and heat-treat the steel traveler to render itglass hard so that it canv be applied to the ring at said depressionwithout distortion. The depression may take a variety of forms and thetop horn or nose of the traveler is preferably so shaped as toaccommodate itself to the particular form of depression in the ring.

Inasmuch as our traveler is made glass hard as to its steel structure,it is practically on an equality with the steel structure of the ringand consequently is much. better fitted to combat the abrasive action ofthe yarns, as above described.

It also has much greater resistance to yarn cuts 15 and at the same timeeliminates to a great extent the chaffing of the yarn which detractsfrom its general appearance and quality.

Being of harder steel structure, our traveler has greater endurance andbetter wearing stability than the softer spring temper traveler nowcommonly used. By reducing wear and tear on the traveler, due to itscontact with the ring, the life of the ring is enhanced in relativepro-portion. Moreover our traveler effects a worthwhile saving inlubricant because being glass hard, it does not give 01f fine particlesof metal, as does the softer traveler now in use, and which particlesbecome mixed with the lubricant and destroy its lubricating value.

By using a traveler which is substantially as hard as the ring, we avoidvarying frictional drag between ring and traveler and hence unevennessof filling of the several bobbins of the spinning or twisting frame withresultant unevenness in the number, quality and loft of the yarn spun ortwisted on such bobbins.

And inasmuch as our traveler may be applied to and removed from the ringwithout distortion, we avoid the necessity for using the applying toolnow commonly employed for springing the spring tempered traveler on andoff the ring.

We are aware of the Booth Patent No. 483,297 of 1892 and the CranePatent No. 814,189, of 1906, each showing a spinning ring of thehcrizontally flanged type having a notch in its horizontal flange toreceive a flanged traveler.

The structures disclosed in these patents were not practical, however,and were never adopted by the industry for reasons as follows: (1) thetendency of the yarn is constantly to pull the traveler up against thering flange, thereby tending to cause the traveler tocatch in the notchand jump off the ring, this tendency increasing as the traveler becomesworn; (2) the notch in the ring flange tends to impede the smooth flightof the traveler; and (3) the traveler can only be run in one directionon the ring.

Throughout the specification and drawing like reference characters areemployed to indicate corresponding parts, and in the drawing:

Fig. 1 is a perspective view of a conventional vertical twister ring,but provided with a depression in its top edge (such depression beinggreatly exaggerated as to its extent and depth for clarity ofillustration) by means of which the traveler may be applied to andremoved from the ring without distortion, thus enabling use of atraveler which is substantially as hard as the ring and therebypractically eliminating varying frictional drag between traveler andring.

Fig. 2 is a fragmentary vertical section through the ring at thedepression and showing the glass hard traveler being applied theretowithout distortion.

Figs. 3, 4 and 5 are fragmentary top plan views of rings showing severalof the many forms which the depression may take, and

Figs. 6, 7 and 8 are fragmentary elevations showing several differenttypes of standard travelers applied to the rings, the rings beingcorrespondingly notched to accommodate the specifically diiferentlyshaped noses of such travelers.

We have indicated generally at H] a conventional vertical twister ringhaving in its top edge II a depression [2 and generally at IS a travelerfor use on said ring, such traveler being of conventional design butbeing glass hard or at least substantially as hard as the ring, andcomprising the usual foot M, back i5, head I 6 and nose l'l. v

The depression i2 may be of any desired shape, length and depth. Afterit is formed in the top edge of the ring, as by milling, grinding,slotting or otherwise, its edges are preferably smoothed oif in anydesired manner.

The depth of the depression is so slight as to be substantiallyunobservable to the eye. It merges smoothly into the top edge of thering. In general, it is sufiicient that the over-all distance betweenthe foot and horn of the traveler shall be very slightly less than theover-all distance between the lower edge of the ring and the bottom ofthe depression so that the traveler may be entered in the depression andeasily applied to or removed from the ring without the use of tools andso that when the traveler is applied to the ring and running thereon itwill not tend to jump off the ring.

The shape and length of the depression are not critical, except as suchdepression must be of a shape and length such that it will permit thetraveler nose to be entered and withdrawn therethrough.

In Figs. 1 and 2 we show a concaved depression of sufficient depth andlength to accommodate any of the several difierent types of travelernose which have become standard in the industry, some of which areillustrated in Figs. 6, 7 and 8.

In Fig. 3 we show the depression cut as a groove l2 diagonally acrossthe top edge of the ring within limits. gularity of such groove may bevaried as desired.

In Fig. 4 we show the depression cut as a curving groove l2 of certainradius and in Fig. 5 as a curving groove ll! of difierent radius. Withinlimits, the width, depth and radius of such grooves may be varied asdesired.

In Fig. 6, we show the depression as a V-notch l2 to accommodate aV-nose traveler Il in Fig. '7 as a round notch 12 to accommodate a roundnose traveler Il and in Fig. 8 as a square notch I'Z to accommodate asquare nose traveler ll.

By subjecting the traveler nose to a hammer blow, it can be given anincreased hardness in the region of its nose.

Various other modifications in structure and design may obviously beresorted to within the spirit and scope of our invention as defined bythe appended claims.

What we therefore claim and desire to secure by Letters Patent is:

1. A vertical spinning or twister ring for guiding the run of a verticaltraveler in either circumferential direction thereon, comprising a ringmember having spaced vertical top and bottom edges and having in its topedge a very shallow depression substantially unobservable to the eye andmerging smoothly into the top edge of the ring, the over-all distancebetween the bottom of said depression and the bottom ring edge beingonly slightly greater than the over-all distance between the foot andtop horn of the traveler and the depression being of such length andshape as to permit the nose of a vertical traveler which is of suchhardness as not to tolerate flexing to be entered therethrough and to beapplied to the ring with only slight pressure and without fracture.

2. The ring of claim 1, said depression extending obliquely across thetop edge of the ring.

3. For use with the ring of claim 1, a traveler of a hardness such thatit cannot be flexed without fracture.

JOHN M. WOOD. PHILIP C. WENTWORTI-l.

The width, depth and an-

